Improvement in hot-water boilers



PHILIP LESSON.

Hot Water Bdiler. y

No. 123,269. l Patentredy'lamsonsz.

PHILIP LESSON, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN HOT-WATER BOILERS.

Specification forming part of Letters Patent No. 123,269, dated J anuary 30, 1872.

To all whom it may concern:

Be it known that I, PHILIP LESSON, of Newark, in the county of Esser4 and State of New Jersey, have invented a new and useful Improvement in Hot-Tater Boilers; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to ina-ke and use the same, reference being had to the accompanying drawing forming part of this specification, in which drawing- Figure 1 represents a sectional side view of my boiler. Fig. 2 is a horizontal section thereof'.

Similar letters indicate corresponding parts.

This invention consists in the arrangement of a jacket made of closely-wound metal wire coated with and united by tin, said jacket being applied to the body of a hot-water boiler in such a manner that said body is strengthened uniformly throughout its whole length, while it preserves a certain degree of elasticity, thereby enabling the manufacturer to reduce the weight of the copper in the body, also to dispense with the strengthening-hoops, and to produced a boiler of superior strength and durability at the usual, or even at a reduced cost. The edge of the hole which passes through the boiler is protected by a doubleflanged bushing or grummet, so as to retain the ends of the wires firmly in position. NVith the strength enin g-j acl; et surrounding the body of the boiler I have also combined a wooden casing, which serves the double purpose of giving to the boiler a good appearance, and of preventing people from burning themselves by coming in direct contact with the metallic body. The seam of the body of my boiler is produced by a double flanged side, which catches over the outwardly-bent edges of the sheet of metal from which said body is made, and thereby the seam is materially strengthened.

In the drawing, the letter A designates the body of my boiler, which is 'made of sheetcopper. The edges a a of the sheet, which are to be joined together, are bent outward, as shown in Fig. 2, and a double-hanged slide, b, is slipped over them so as to retain them lrmly together. The interior surface of the boiler is coated with tin, and, by applying soft solder to the slide b and hook-shaped edges c a, a strong and durable seam is produced, and the tedious labor of bracing the edges ofthe body together can be dispensed with. The body A is strengthened by a jacket, c, which is made of metal wire wound closely upon said body, as shown in Fig. l. This metal wire is coated with tin, and after it has been wound on the body the whole is dipped into molten tin, and thereby the coils of the wire are rmly united and a jacket of great strength is produced. By this jacket the body A is rendered strong and dura-ble, and it preserves a certain degree of elasticity, which enables the same to withstand successfully the pressure of the atmosphere in case a vacuum should form in the interior ofthe boiler. By applying my jacket to the body of the boiler I am enabled to reduce the weight of copper, and I can dispense with the strengthening-hoops usually applied to the inner surface of such boilers, so that the cost of my boiler is but little if any larger than that of an ordinary boiler, and at the same time my boiler is much more durable. An ordinary boiler provided with strengthening-hoops is liable to crack at the points close to said hoops, since those portions of the boiler which are situated between the hoops are exposed to frequent compressions and expansions 5 but in my boiler the entire body is of uniform strength, and no portion thereof will wea-r out prematurely. rlhrough the side of the body A is cut a hole, d, for the reception of the pipe e. The edges ot' this hole are protected by a double-hanged bushing, j', which is similar to a large eyelet. The outer flange of this eyelet catches over the ends of the wires, which are laid bare by cutting the hole, and by said flange the wires are prevented from cutting loose. The outer surface-of the jacket c may be coated with varnish, so as to impart to it a handsome appearance; but I apply by preference a wooden casin g, B, which is made of a series of staves, (see Fig. 2,) and held in place by hoops U, which are drawn up tight by screws' g, or by any other suitable means. This wooden casing has the double advantage of imparting to the boiler a handp some appearance, and also of serving as a guard to prevent people from burning themselves by coming in contact with the heated metallic surface of the boiler. By inclosing the boiler in the Wooden casing, the tedious labor of polishing the surface of said boiler and of keeping the same bright is saved, and the same saving in time and labor is effected by applying to the outer snrface of the strengthening-jacket one or more coats of varnish. Furthermore, the strengthening-jacket and also the Wooden casing protect the boiler from getting bruised by blows against it.

lVliat I claim as new, and desire to secure by Letters Patent, is

1. The arrangement of a strengthening jacket, made of a coil of Wire Wound tightly on the body A of a hot-Water boiler, substantially in the manner herein shown and described.

2. The double-flanged slide b, in combination with the hook-shaped edges of the metal sheet composing the body A of a hot-Water tially as set forth.

PHILIP LESSON. Witnesses:

W. HAUFF, E. F. KAs'rENHUBER. 

